package cn.hdu.liang.operators;

class Tank {
    int level;
}

public class Assignment {

    public static void main(String[] args) {
        Tank t1 = new Tank();
        Tank t2 = new Tank();
        t1.level = 9;
        t2.level = 47;

        System.out.println(t1.level + "    " + t2.level);
        t1 = t2;
        System.out.println(t1.level + "    " + t2.level);
        t1.level = 27;
        System.out.println(t1.level + "    " + t2.level);

    }
}
